ShakeMojo.java

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2016-2024 Objectionary.com
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
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 * The above copyright notice and this permission notice shall be included
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 * SOFTWARE.
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package org.eolang.maven;

import com.jcabi.log.Logger;
import java.nio.file.Path;
import java.util.Collection;
import java.util.Map;
import org.apache.maven.plugins.annotations.LifecyclePhase;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
import org.cactoos.iterable.Filtered;
import org.cactoos.map.MapEntry;
import org.cactoos.map.MapOf;
import org.eolang.maven.optimization.OptSpy;
import org.eolang.maven.optimization.OptTrain;
import org.eolang.maven.optimization.Optimization;
import org.eolang.maven.tojos.ForeignTojo;

/**
 * Shake (prepare) XML files after optimizations for translation to java.
 * @since 0.33.0
 */
@Mojo(
    name = "shake",
    defaultPhase = LifecyclePhase.PROCESS_SOURCES,
    threadSafe = true
)
public final class ShakeMojo extends SafeMojo {
    /**
     * The directory where to shake to.
     */
    public static final String DIR = "3-shake";

    /**
     * Subdirectory for shaken cache.
     */
    static final String SHAKEN = "shaken";

    /**
     * The directory where to place intermediary files.
     */
    static final String STEPS = "3-shake-steps";

    /**
     * The map with directories of ShakeMojo.
     * @checkstyle DiamondOperatorCheck (10 lines)
     */
    @SuppressWarnings("PMD.UseDiamondOperator")
    private static final Map<String, String> DIRECTORIES = new MapOf<String, String>(
        new MapEntry<>(OptimizationFolder.TARGET.getKey(), ShakeMojo.DIR),
        new MapEntry<>(OptimizationFolder.CACHE.getKey(), ShakeMojo.SHAKEN)
    );

    /**
     * Track optimization steps into intermediate XML files?
     *
     * @since 0.24.0
     * @checkstyle MemberNameCheck (7 lines)
     */
    @SuppressWarnings("PMD.LongVariable")
    @Parameter(property = "eo.trackOptimizationSteps", required = true, defaultValue = "false")
    private boolean trackOptimizationSteps;

    @Override
    void exec() {
        final Collection<ForeignTojo> tojos = this.scopedTojos().withOptimized();
        final int total = new OptimizedTojos(
            new Filtered<>(
                ForeignTojo::notShaken,
                tojos
            ),
            this.optimization(),
            new OptimizationTask(
                new MapOf<String, Path>(
                    new MapEntry<>(OptimizationFolder.TARGET.getKey(), this.targetDir.toPath()),
                    new MapEntry<>(OptimizationFolder.CACHE.getKey(), this.cache)
                ),
                ShakeMojo.DIRECTORIES,
                ForeignTojo::withShaken,
                ForeignTojo::optimized
            )
        ).count();
        if (total > 0) {
            Logger.info(
                this,
                "Shaken %d out of %d XMIR program(s)", total,
                tojos.size()
            );
        } else {
            Logger.debug(this, "No XMIR programs out of %d shaken", tojos.size());
        }
    }

    /**
     * Shake optimizations for tojos.
     *
     * @return Shake optimizations
     */
    private Optimization optimization() {
        final Optimization opt;
        if (this.trackOptimizationSteps) {
            opt = new OptSpy(this.targetDir.toPath().resolve(ShakeMojo.STEPS));
        } else {
            opt = new OptTrain();
        }
        return opt;
    }
}